Deep well pump



Sept. 20, 1938. A. J. PENICKI ET AL 2,130,598

DEEP WELL rum? Filed July 15, 1935 s Sheets-Sheet 1 P 1938- A. J. PENICK El AL I 2,130,598

DEEP WELL PUMP Filed July 15. 1935 3 Sheets-Sheet 2 -TAZ Sept. 20, 1938. A. J. PENICK ET AL 2,130,598

DEEP WELL PUMP Filed July 15, 1935 3 Sheets-Sheet 3 Patented Sept. 20, 1938 Arthur J. Penick and Kirby T. Penlck, Houston, x

1 Application July 15, 1935, Serial No. 31.447

BOllims.

This inventionrelates to a pump.

An object of the invention is to provide a pump of the character described specially designed for use in deep wells such as oil wells.

Another object of the invention is to provide the novel combination of a sucker rod, plunger, and working barrel that may be lowered into, or withdrawn from, a well as aunit.

A further object of the invention is to provide, in a pump, a novel type of valve mechanism for controlling the discharge of the pumped liquid from the working barrel.

A still further object is to provide, in combination, a novel type of working barrel arranged to be suspended from a seat in the well pipe, and

having controlling means at the upper end thereof arranged to cooperate with the pump plunger, said plunger being attached to, and operable by, the sucker rod, "and said rod, plunger, and working barrelbeingwithdrawable as a unit from the well.

A still further object of the invention is to provide, in a well pump apparatus, novel means for supporting the pump in well pipe. said supporting means being either formed as a part of said pipe, or being separate from the pipe, and suitably anchored therein.

with the above and other objects in view, the invention has particular relation to certain novel features of construction, operation, and arrangement of parts, an example of which is given in this specification and illustrated in "the accompanying drawings, wherein:

Fig. 1 shows a side view oi. the pump, partly in section.

Fig. 2 shows an enlarged, fragmentary vertical sectional view, showing a modified form of the valve mechanism for controlling the advance of fluid upwardly.

' Fig. 3 shows an enlarged cross-sectional view taken on the line 3-3 of Fig. 2.

Fig. 4 shows a side elevation, partly in section, of the upper portion of a slightly modified form of the type of pump shown in Fig. 1.

Fig. 5 shows a vertical sectional view of the lower portion thereof.

Fig. 6 shows a side view, partly in section, of

the upper end portion of the type of pump shown in Fig. 1, but showing a modified form of pump support in the well pipe, and

Fig. 7 shows a side elevation, partly in section, of the lower portion thereof. I

Referring now more particularly to the drawings wherein like numerals of reference designate the same parts ineach of the figures, the numeral I designates a pipe set in a well bore.

Incorporated into this pipe there is-a special coupling 2 having the inside, downwardly tapering seat 3. W

The numeral 4 designates the tubular working barrel of the pump whose lower end is open and which has the vertical inlet slits, or openings, 5, spaced above said lower end. A tubular plunger 6 works through the working 1 barrel and is spaced inwardly therefrom and has the upwardly opening cup ring assembly I thereon forming a close fit with the working barrel. The upper end of the barrel 4 is attached to a tubular hanger 8 whose upper end isfiared and seats on the seat 3 to support the working barrel in suspended position from said seat. The upper end of the hanger is formed into a cage 8a. A sleeve-like packing element 9 has its lower end moulded into the cage. Its outer side is tapered downwardly to conform to the shape of and to fit closely against the seat 3. This packing element- 8 is formed of resilient material and its upper end is reduced in outside diameter and extended-upwardly fitting closely about the plunger 6. In the form shown in Figs. 1, 4, and 6, the upper end ofsaid extension is upwardly flared, as at l0, and

varound. said reduced portion .is providedwi'th an external annular groove ll.

The lower end of the plunger 6 is extended beneath the working barrel and has an external annular stop' 12 thereon. The plunger may be reciprocated by a suitable power at the ground surface through the instrumentality of the usual sucker rod l3 whose lower end is connected to a 5 bell-shaped nipple it which, in turn, is secured to the upper end of 'said plunger.

. In the form shown in Fig; 2, the upper end of the working barrel is attached to the lower end of the hanger l5 whose upper end is upwardly 40 flared to conform to the shape of and to fit the seat 3. Aboveand resting on the hanger i5 is the cage l6, having the external radial lugs ll. The flared portion of the hanger 15 has the deep sockets l 8 at its under side, and rods 19 have their -upper ends anchored to the lugs l1, and extend downwardly through bearings in the hanger, and their lower ends have enlarged heads 20 in said sockets.

The upper end of the hanger l5 has an annular groove 21 in which a packing washer '22 is located. A sleeve-like packing element 23 surrounds the plunger 6 and its lower endis moulded into the cage l6,'and seated in an annular groove in the lower end of the packing element 23, there is a packing ring 24 which registers with the groove 2|.

The apparatus, as shown in Figs. 1 and 2, may be assembled and let down into the well by means of the sucker rod l3 until the hanger supporting tne working barrel lands on the seat 3. The sucker rod may then be lowered until the lower, margin l4 seats in the groove H of the form shown in Fig. 1 oron the lugs" of the form shown in Fig. 2, and the hanger thus forced firmly in place in the seat 3, and for that purpose, if necessary, the sucker rod may be successively elevated and dropped to drive the hanger firmly in its seat. The pump is then ready to operate. Upon downward movement of the plunger 6, a vacuum will be created in the working barrel abovethe cup rings 1 until said cup rings clear the openings 5, and thereupon the surrounding liquid to be pumped will flow in through the openings 5, the plunger moving on downwardly to carry the cup rings 1 beneath the openings. In this'connection, it may be stated that the pump should be lowered to a sufficient depth to carry the openings 5 beneath the level of the liquid to be pumped. Upon upstroke of the plunger, the cup rings 1 will'move up and close the openings 5 and trap the liquid above in the working valve, and this liquid will be forced on up and the yieldable packing 9 will expand outwardly to permit the fluid to pass between it and the plunger, and said liquid will be trapped-above the packing element 9. In the form shown in Fig. 2, upon upward movement of the plunger, the packing element 23 will move upwardly until the heads 20 engage the upper ends of the sockets l8, and the fluid will pass up and out between-the hanger l5 and the lower en of the packing element 23, the excess fluid passi g up between the packing element 23 and the plunger, said packing element expanding to permit this. The packing elements 9, 23, thus form valves for advancing the liquid upwardly upon reciprocation of the plunger.

In the form shown in Figures 4 and 5, the plunger So has a coupling. l2a incorporated therein beneath the working barrel do, said coupling l2a forming a stop for a purpose to be hereinafter'stated. Inthe coupling, there is a valve seat 25, the passageway through which is-controlled by the upwardly opening ball valve 26 whose upward movement is limited by the crosspin 21 inthe said plunger. The. plunger is also equipped with the upwardly opening cuprings 1 and has outlet openings'fib above. said cup rings. In other respects the construction shown in Figs. 4 and 5, is similar to that shown in Fig.4. Upon downward movement of the plunger 6a, the fluid above the cups I will be forced on up between the packing element 9 and the plunger, said packing element being sufllciently yieldable to permit this. Upon downward movement oi the plunger 9a the packing element 9 will fit closely about the plunger to trap the fluid above it, thus acting as avalve."

The pump shown inFigs. 6 and 7 is similar to that shown in Fig. '1, but is shown mounted in a seat 3 of the pipe In which may be lowered into a well casing, or well pipe 23. The lower. end of the pipe I a telescopes within the, upper end of. a

liner!!! whose lower'end may beformed, if desired, into the well screen 30, having the set shoe 3| at the lower end thereof. The telescoping end of the pipe la has vertical slots 32, and a cross pin 33 has its ends anchored to the liner 29" and works through said slots 32. This permits. a limited lengthwise movement of the pipe la relaaround the pipe la and whose lower end is suitably anchoredthereto and attached to the upper end of said packer, there is a suitable setting nipple 38 whose lower end has the expansible gripping dogs 39 arranged to engage the external teeth 40 on the pipe la. The screen, liner and pipe la with the packer and packer-expanding means thereon and heretofore described may be assembled and let down into the well bore by a suitable setting string provided for the purpose 21, but prevents their complete and when the set shoe 3| lands on the bottom, the

expander 36 will move on downwardly, expanding the slips 34 into engagement with the casing 28. This wil1 prevent further downward movement of the pipe la, but the weight of the setting string will cause thenipple 38 to move on downwardly to expand 'the'packer 31 toform a fluidtight joint between the pipe Ia and the outer casing 28. Upon downward movement of the settingnipple 39, the gripping dogs 39 will rachet over the teeth 40 and will thereafter hold the packer expanded.

,The pump may be then assembled and let down into the well and the hanger seated in theseat 3, as shown in Fig. 6, and driven therein by the nipple l4, as hereinabove explained, and pumping operations proceeded with in the manner above set forth in connection with the description of Fig. 1.

When it is desired to withdraw the pump, the sucker rod may be pulled upwardly to carry the stop l2, or l2a, as the case may be, into contact with the lower end of theworking barrel and a continued upward pull on the sucker rod will lift the barrel hanger off its seat and the complete pump may be pulled as ajunit from the well as the sucker rod is broken up. v

The drawings and description disclose what are now considered to be preferred forms of the invention by way of (illustration only, while the broad principle of the invention will be defined by the appended claims.

What we claim is:

- 1. The combination with a pipe in a well having a supporting seat, of a pump working barrel having a hanger thereon shaped to fit the seat to support the barrel, a plunger workingthrough the barrel, said barrel and plunger-having cooperating means efiective to advance the well liquid upwardly through the barrel upon reciprocation of the plunger,- said liquid advancing means including a valve formed of yieldable ma.- terial at the upper end of the barrel and surrounding the plunger and forming a packing between the seat and plunger and shaped to yield outwardly upon upward movement of the plunger to permit the upward movement of the liquid between the valve and plunger, 'said valve closely surrounding the plunger to prevent the passage of liquid downwardly between the valve and plunger upon downward movement of the plunger.

2. The combination with a pipe in a well having a supporting seat, of a pump working barrel havinga side opening and having a hanger thereon formed of resilient material and shaped to fit the seat to support the barrel, said hanger having an annular pocket in its upper end forming an annular flexible lip, a plunger working through the barrel across the opening and closely surrounded by said lip, said barrel and plunger having cooperating means efi'ective to advance the well liquid upwardly through the barrel upon reciprocation of the plunger, a sucker rod' attached to the upper end of the plunger and an abutment on the plunger beneath the working barrel arranged to engage the lower end of the barrel upon withdrawal of the sucker rod and the plunger from the well whereby the sucker rod, plunger, and working barrel may be withdrawn from the well as a unit.

3. A pump comprising a working barrel, a plunger working through the barrel, means attached to the plunger for reciprocating the same, valve means eflective to cause the pumped liquid to advance upwardly through the barrel upon reciprocation of the plunger, said valve means including a yieldable member on the barrel shaped to surround and grip the plunger and being expansible and upwardly movable to permit the passage of liquid upwardly between said member and plunger as well as around said member upon upward movement of the plunger and shaped to prevent the passage of liquid downwardly between said yieldable member and plunger.

4. A pump comprising a working barrel, a hanger for the barrel including a packing member, a plunger reciprocable through the barrel, valve means arranged to effect the inflow of liquid into the barrel and the discharge thereof upwardly from the barrel upon reciprocation of the plunger, said valve means including said packing member associated with the barrel and closely surrounding and gripping the plunger to prevent the downward passage of liquid between said packing member and plunger and being yieldable to permit the upward passage of liquid between said packing and the plunger upon upward movement of the plunger.

5. A pump comprising a working barrel, a plunger reciprocable through the barrel, valve means arranged to efiect the inflow of liquid into the barrel and the discharge thereof upwardly from the barrel upon reciprocation of the plunger, said valve means including a packing member associated with the barrel and closely surrounding and gripping the plunger to prevent the downward passage of liquid between said packing member and plunger and being yieldable to permit the upward passage of liquid between said packing and the plunger upon upward movement of the plunger, a sucker rod to the lower end of which the plunger is attached and a stop member on the plunger beneath the barrel and arranged to engage the barrel upon upward movement of the plunger.

6. A pump comprising a working barrel, a plunger working through the barrel, means attached to the plunger for reciprocating the same, cooperating means associated with the plunger and barrel, respectively, effective to cause the pumped liquid to advance upwardly through the barrel upon reciprocation of the plunger, said cooperating means including a yieldable member closely surrounding the plunger and in contact therewith approximately throughout the inside area of the yieldable member and efiective to prevent the passage of liquid from above downwa rdly upon downward movement of the plunger, and movable upwardly upon upward movement of the plunger to permit the liquid to pass upwardly from the barrel around the yieldable member as well as between it and the plunger upon upward movement of the plunger.

7. A pump comprising a working barrel, a tubular plunger working through the barrel, means for reciprocating the plunger, packing means on the plunger forming a fluid-tight joint with the barrel, said plunger having an upwardly opening valve and an outlet above the packing into the barrel, a packing member around the plunger above said opening, and forming, substantially, an extension of the barrel arranged and shaped to prevent the downward movement of liquid between said member and plunger, upon downward movement of the plunger and being yieldable to permit the passage of liquid between said member and plunger, upon the upward movement of the plunger.

8. The combination with a pipe in a well hav- 

